2007 Chevrolet Tahoe AC control issue

2007 CHEVROLET TAHOE
176,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC
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JMTRAP08
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  • 3 POSTS
A/C is stuck in vent position. Cannot switch to floor or defrost. Also, air comes out of vents even when the system is in the off position.
Nov 14, 2014 at 8:16 PM
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WRENCHTECH
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 20,761 POSTS
The mode doors are operated by an electronic actuator mounted on the left side of the HVAC housing. You should be able to access it from under the dash on the driver's side to see if the linkage is stuck or jammed in some way but the actuator may be faulty.
Nov 15, 2014 at 5:32 AM
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JMTRAP08
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  • 3 POSTS
Thank you. Do happen to know where I can find a picture of it?

Is it this one?
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Nov 15, 2014 at 6:39 AM
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WRENCHTECH
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 20,761 POSTS
The first one looks like the temp actuator but the second one looks like the mode actuator. https://www.2carpros.com/images/external/130937816.gif
Nov 15, 2014 at 7:09 AM